Two days ago, I told you that German physicists had built a single-photon server. But French researchers also have used ultra cold atoms of rubidium to record the full life of a photon. This was one ...

Every time you switch on a light bulb, 10 to the power of 15 (a million times a billion) visible photons, the elementary particles of light, are illuminating the room in every second. If that is too ...

A 'single-photon server', producing a steady stream of single-photon pulses for up to half a minute, has been created by confining, cooling and controlling a neutral atom inside a tiny optical cavity.